Good work. The second & 3rd in this post are good compositions. I see that in order to compensate for the strong ligting, you had to reduce the exposure, which turned out to be a good thing, in my mind. While the shots capture the motion of water, it's not clouded, and thus a more natural exposure. It would be a good idea to try the same exposures in early morning or late afternoon/evening light.
Thanks for sharing your work.